I've been meaning to move from Wuala to ownCloud for some time, but there were always more important things on my to-do list. Recently, though, Wuala started to act up, so it was time to take the plunge.

Cloud computing has become a viable option for highperformance computing. In this article, we discuss the use case for cloud-based HPC, introduce the StarCluster toolkit, and show how to build a custom machine image for compute nodes.